The AFT program provides an affective means to aid learning - far better than flash cards. The set up of the program also allows you to improve your ear and read note positions on the stave. AFTpro also caters for the bass guitar 4,5 or6 strings.
The excersises are backed up by a map of the fret board which changes from red to green, through various shades of orange and yellow, as you learn the note positions....COOL. You can instantly see your progress but more importantly see where you need to practice. It's also tempted me into getting a bass!!!
The pro version of Absolute Fretboard (a 1 person liscense for 1 pc) costs 13. This does seem a tad expensive, but when you think what you are actually getting is a complete mastery of the fret board for the cost of a couple of sets of strings, how much would you pay for this ability? There's also a demo version that covers the first 5 frets. Check it out!